B9 A4 2.0t Turbo Upgrade: Borgwarner S3 Turbo Installing & Power Gains Explained

The B9 A4 2.0T is a popular choice among performance enthusiasts looking to enhance their vehicle’s power and efficiency. One of the most significant upgrades available for this model is the BorgWarner S3 turbocharger. In this article, we will explore the installation process of the BorgWarner S3 turbo and the power gains that can be expected from this upgrade.

Understanding the BorgWarner S3 Turbo

The BorgWarner S3 turbocharger is designed to provide a substantial boost in performance for the B9 A4 2.0T engine. It features advanced engineering that allows for improved airflow and increased power output. Here are some key specifications:

  • Increased boost pressure
  • Enhanced spool time
  • Improved efficiency

Installation Process

Installing the BorgWarner S3 turbocharger requires careful preparation and attention to detail. Below is a step-by-step guide to help you through the installation process.

Tools and Materials Needed

  • Socket set
  • Torque wrench
  • Gasket scraper
  • New gaskets
  • Oil line fittings
  • Coolant line fittings

Step-by-Step Installation

Follow these steps to successfully install the BorgWarner S3 turbocharger:

  • Begin by disconnecting the battery to ensure safety.
  • Remove the intake manifold to access the turbocharger.
  • Disconnect the exhaust downpipe from the turbo.
  • Remove the existing turbocharger, taking care not to damage surrounding components.
  • Install the new BorgWarner S3 turbo, ensuring that all fittings are secure.
  • Reconnect the exhaust downpipe and intake manifold.
  • Reattach the battery and check for any leaks.

Power Gains from the Upgrade

One of the main reasons for upgrading to the BorgWarner S3 turbo is the impressive power gains it offers. Here’s a breakdown of what you can expect:

  • Increased horsepower: Up to 300+ hp depending on supporting mods.
  • Enhanced torque: Significant improvement in low-end and mid-range torque.
  • Improved throttle response: Faster spool times lead to a more responsive driving experience.

Supporting Modifications

To maximize the benefits of the BorgWarner S3 turbo upgrade, consider the following supporting modifications:

  • Upgraded intercooler for better cooling efficiency.
  • High-flow fuel injectors to support increased fuel demands.
  • Performance exhaust system to reduce back pressure.
  • ECU tuning to optimize engine performance and reliability.

Conclusion

The BorgWarner S3 turbocharger is an excellent upgrade for the B9 A4 2.0T, providing substantial power gains and enhanced performance. With proper installation and supporting modifications, you can transform your vehicle into a high-performance machine. Always remember to consult with a professional if you are unsure about any part of the installation process.